Rolling mill



AJune 21 1927.

L.. .PIERCE .nomme um,

Filed 'March 1a v1921s- INvEyToR L.Pleree ATTORNEY Patented June` 21,l 1927.

PATENT. OFFICE.

LEoN PIERCE, or NEW Yon-K N. Y..

jen v -p .v yROLLING MILL.l

' Application ined March 1s, 192s. V'serial No. 95,570.

The main object of this invention yis to provide a rolling milll which is inexpensive incest, simple in design,V and isjprovided withan idler roll. and two driven supporting rolls which areadapted to forman internal bead or depression .upon'a length ofpiping l which serves as aV coupling' between a` pair f pipe lengths used in foundation work.v o Another Vobiect isto provide a. -rollingfmill l, having an-idler forming roll which presses the material being flanged intocontaot withy colmole'mental rolls through the aid, of 4compressed airk cvlinders and pistons.v `which latter lengage the bearing blocks roll and lower the same'. l

1 Still another object is to provide a rolling mill'having an 'idler forming` roll which presses Vinternal flanges upon sleeves intermediate their length and means for lifting the idler roll and removing` `one of the bearing blocks so .that the sleeve mav be mounted conveniently upon the: idler roll `without dismantling any additional parts of the rolling mill.A4 'Y 1 -u 1 .The above Yandl other objects will become apparent in the description below. inrwhich characters of reference refer to like-named parts in the drawing.

Referring brieflv to the drawing` Figure 1 is a front elevational view of the 'rolling mill.

Figure 2 is a side elevational view of the same. 1

Figure 3 is a sectional plan view taken on line 3-3 of Figure 1.

Figure 4 is a .sectional elevational view of of the idler the rolling mill, showing the idler roll inraised position preparatory to removingr a finished sleeve therefrom.

Referring in detail to the drawing, the numeral indicates upright plates which are arranged at the corners of the rolling mill. Intermediate the height of these upright plates, a platform is formed by sus-v 45 pending two I-beams 11 and 12 from supporting beams 13 and 14 which extend toward each other from the plates 10 and are riveted to saidpplates. This platform extends across the width of the rolling mill 50 and supports a pair of compressed air cyl-vv inders 15 and 16. The cylinders are seated on the I-beams 11 and 12 and are clamped between these I-beams and connecting I- beams 17 and 18 which are mountedand securely attached to the upper ends of the uprights 10. Between the lower ends of the 'uprights 10.l` plates v119 and 20 are fixed. These plates formr part of the frame of the rollingmill vand 'have vertical channels 21 formed therein.l vThe channels receive bear- 50 ine' vblocks 22 and 23 which receive the opposite ends of a shaft 24l on which an idler roll 25 hav-ing semi-circular ,groove 26 extending' -peripherallv thereon.- is mounted.

Below these channels 21, a pair of aligned 05 shafts' 27 and 28am rotatably journalled in the plates v-and 19 on each side frame. Said shafts have relatively smaller driven fornnfnnfr rolls 29and 30 mounted thereon which cooperate with the idler formingr roll and areprovided with semi-circular peripheral ridges 31 which arev complemental to the vgroove 26 in the idler rolland register in saidfpgroove portion. These idler rolls are off-set from the center of the rolling' ymillV75 on both sides of the channels 21. Thev shaft y 28 has relativelv large spur gear 32 fixed-to one-end thereof ,ou one side of the frame and the remainingshaft 27 has similar spur .Q'ear33 Ifixedtheretoon the opposite side of 80 the-rolling' mill.` 'Below the vchannels 21*V and shafts 2'? and a drive shaft 34 is journalled inthe plates 19 and 20 of the side frames and at one position has a pinion 35 thereon which meshes with the spur gear 33 and at its end has an additional pinion 36 of similar dimensions which meshes with the spur gear 32.

The use of the rolling mill is to form beaded sections intermediate the lenpth of a piece of piping to provide internal flanges fory forminga coupling. such as illustrated by Patent No. 1.507.138. In inserting the length of pipe in place preparatory 'to beading the same internally. the bearing-blocks 22 and 23 are lifted by tackle suspended from above the'rolling mill and the block 22 is removed Afrom the end of the shaft 24 and the coupling or length of pipe is then slipped over the idler forming roll 25. The bearing blocks are then again loweredv after slipping the bloclr22 over the end of the shaft 24 into the channels 21. Air then enters the cylinder 16 through inlet pipes not shown on the drawing and the piston 37 is lowered, urging the blocks downward so that the pipe being formed into a coupling lies in tight contact with and rides on' the surface of the bead 31 on the forming rolls 29. The forming rolls 29 and 30 rotate in the same general direction Vand are driven from a single shaft 34 which would not be possible were any other driving means substituted, it being understood that a large ratio between gears is necessary in order to reduce the rotation of the forming `rolls 29 and 30 with respect to the rotation ott' the driven shaft 34. To permit both rolls to be driven in unison, a single gear is attached to each shaft :28 and 27 on opposite sides of the trame and these spur gears 32 and 33 are driven by individual pinions placed on opposite sides of the 'frame and mounted at these positions rigidly on the drive shaft.

It is to be noted that certain changes in construction may be made Without departing from the spirit and scope of the invention.

In mounting a sleeve upon the idler roll of the mill, it is necessary that the bearing block 22 be made removable so that the end oi the idler roll is exposed when raised to the position shown in Figure 4. To accomplish raising of the idler roll, block and fall tackle is necessary. One vblock and fall is used to raise oney of the bearing-blocks While the bearing block 22 is raised with another block and fall to a position Where it is out otl the Way so that a sleeve may be conveniently slipped over the idler roll.

I claim l. In a rolling mill, a pair of end frames, an idler roll having a. groove, driven rolls having ridges thereon cooperating With the grooves on the idler roll, compressed air cylinders mounted on said :trames above said rolls, bearing blocks supporting said idler roll, one of said bearing blocks being guided vertically the entire height of one of said frames, the `opposite bearing bloclr of said idler roll being guided vertically 'to a position intermediate the height of the opposite frame, and means for driving said driven rolls from opposite ends by the same trans-v roll, one of said bearing blocksbeing guided vertically the entire height of one of .said frames, the 'opposite bearing block vof said idler roll being guided vertically to a position intermediate the height of the opposite frame, the guide means for said Vbearing blocks comprisingl a pair of plates spacedapart and rigid With each other on 'one frame member, said plates 'extending the height of said lfra-me member guiding one of said bearing blocks vertically the entire height vofthe frame, a similar pair of plates von the opposite frame member 'ending Vintermediate the height ofsaid fra-me Permitting the opposite bearing block fto beiremoved vfrom said Vgi'iide means when removing said idler roll. V

In testimony whereof I attix my signature.

LEON PIERCE. 

